Cotter-pin puller



March 16 192s. 1,576,782

H. E. PIEH I COTTER PIN FULLER Filed March 27 1925 Wff Q Patented Mar.16, 1926.

UNITED STATES PATENT OFFICE.

HENRY ERNEST PIEH, OF WILLISTON, NORTH DAKOTA, ASSIGNOR OF ONE-FOURTH TOGEORGE H. PIEI-I AND ONE-FOURTH TO LILLIAN M. PIEH, BOTH OF MINNE-APOLIS, MINNESOTA.

COTTER-IIN FULLER.

Application filed March 27, 1925.

To all whom it may concern:

Be it known that I, HENRY ERNEST PIEH, a citizen of the United States,residing at lVilliston, in the county of Williams and State of NorthDakota, have invented certain new and useful Improvements in Gotter-PinPullers; and I do hereby declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same.

My invention has for its object to provide an extremely simple andhighly efficient cotter pin puller, and to this end it consists of thenovel devices and combinations of devices hereinafter described anddefined in the clann.

In the accompanying drawings, which illustrate the invention, likecharacters indicate like parts throughout the several views.

Referring to the drawings:

Fig. 1 is a perspective view of the improved cotter pin puller;

Fig. 2 is an end elevation of the cotter pin puller; 1

Fig. 3 is a transverse section taken on the line 38 of Fig. 1, and Fig.4 is a transverse section taken on the line 44 of Fig. 1.

The numeral 4 indicates a pair of jaws pivotally connected at 5 andhaving handles 6'by which said jaws are operated. Integrally formed withthe outer ends of the jaws 4 is a laterally projecting relatively sharpbill 7. The inner face of the hill 7 extends at right angles to the jaws4 and its outer face extends obliquely from the point of the bill to theouter ends of said jaws The inner faces of the jaws 4 and the hill 7 arerecessed at 8 to leave co-acting relatively sharp clamping edges 9. Theback of the jaws 4 in respect to the bill 7 is transversely curved toafford a rocking fulcrum 10 and the ends of said jaws are roundedlongitudinally in respect thereto to afford a Serial No. 18,744.

rocking fulcrum 11 that extends at right angles to the rocking fulcrum10. The outer face of the bill 7 is transversely rounded to afford arocking fulcrum 12 that extends obliquely in respect to the rockingfulcrum 11. The clamping edges 9 diverge from the points of the billsectlons and then continue along the ends and sides of the jaws 4 to adistance more than half the length of said aws.

The inner faces of the jaws 4, inward of the clamping edges 9, arefurther recessed at 13 and provided with co-acting cutting edges 14.

A cotter pin may be pulled by engaging the same with the co-actingclamping edges 9 between the rocking fulcrums 10,11 and 12 and thenremoved by rocking the tool on any one of said fulcrums; or a cotter pinmay be engaged by the co-act-ing clampingi edges 9 directly opposite therocking fulcrums 10, 11 and 12. It is also evident that the tool may berocked on the outer ends of its jaws 4 or at the junction of the obliquesurface of the bill 7 with the outer ends of the jaws 4. The point ofthe bill 7 may be inserted into the eye of a cotter pin to pull thesame. Many other movements of the cotter pin puller are possible to pullav cotter pin.

WVhat I claim is:

A cotter pin puller comprising a pair of handle-equipped pivotallyconnected jaws having at their outer end; a laterally projectingrelatively sharp bill, the inner faces of the jaws and bill beingrecessed to leave contacting relatively sharp marginal clamping edges,certain of which extend parallel to the plane in which the opening andclosing movements of the jaws take place and certain others of whichextend transversely thereof.

In testimony whereof I afiix my signature.

HENRY ERNEST PIEH.

